Home / 276,263.56-381,207.90-155,400.76

Finding the Fourth Proportional to 276,263.56, 381,207.90 and 155,400.76

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Solution

The fourth proportional to 276,263.56, 381,207.90 and 155,400.76 is: 214,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,263.56 : 381,207.90 = 155,400.76 : x
  2. Step 2: Convert to fraction form
    276,263.56/381,207.90 = 155,400.76/x
  3. Step 3: Cross multiply
    276,263.56x = 381,207.90 × 155,400.76
  4. Step 4: Simplify right side
    276,263.56x = 59,239,997,378.00
  5. Step 5: Solve for x
    x = 59,239,997,378.00/276,263.56
  6. Step 6: Final answer
    x = 214,432.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.